MUCH of history should make you not only uncomfortable, but angry that such things happened. Screw political correctness and lowering someone's self-esteem, learn the truth and accept it, then learn from it.

Montserrat, for example. Or Japanese sex slaves. Or the treatment of the followers of Spartacus. Or Sand Creek. Or Thibaw and Supayalat's killing of the Burmese royal family in 1878. Or the world-wide participation in slavery. Or the Nazi medical "experiments." Or...why go on?

"Those who do not learn from history are condemned to repeat it."

And, perhaps more to the point these days, "Those who have no history have no future."